Education Technology

Watt's The Deal?

Published on 12/03/2010

Activity Overview

Students use the CBL to collect data on the brightness of different light bulbs and associate these values with the watt ratings for each bulb. Then they will graph the data and compute the rate of change.

Key Steps

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    In this activity, students use the light probe to explore the brightness of light bulbs.

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    Once the data is collected, students will enter it into numerical and categorical lists which they will display as a bar graph. The Trace feature allows students to visually see any patterns that developed in the data.

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    Then students will graph the data as a scatter plot and use the Manual-Fit command to determine an equation that represents the data. They will use the line to predict the light intensity for a given light bulb wattage.